Usulan penerapan total productive maintenance (TPM) pada lini i stamping production division (SPD) PT. Tmmin
P enelitian dilakukan terhadap Stamping Production Division (SPD) di Sunter II Plan PT. Toyota Motor Manufacturing Indonesia (PT. TMMIN). SPD merupakan divisi pada PT. TMMIN yang beroperasi dalam merubah lembaran plat baja menjadi komponen atau bagian dari rangka pada kendaraan bermotor. Permasalahan utama pada bagian maintenance adalah terjadinya linestop karena kerusakan pada mesin atau komponen mesin (breakdown) sehingga mengganggu proses produksi serta dapat menimbulkan dampak terhadap target, jadwal produksi, dan jam kerja operator (overtime). Penelitian kali ini menggunakan pendekatan Total Productive Maintenance (TPM) sebagai solusi dalam menyelesaikan permasalahan. Perhitungan diawali dengan mengukur nilai overall equipment effectiveness (OEE) dari lini yang diamati sebagai tolak ukur dalam TPM. Didapatkan bahwa beberapa nilai OEE dalam bulan pengamatan masih di bawah nilai world class OEE yaitu sebesar 85%. Berdasarkan hasil identifikasi six big losses, losses yang terbesar disebabkan oleh breakdown losses sebesar 61.36% karena besarnya breakdown mesin dan reduced speed sebesar 37.14% karena terjadinya penurunan kecepatan produksi. Penggunaan fault tree analysis (FTA) memperlihatkan secara rinci bagian komponen dan alasan penyebab mesin breakdown sehingga terjadi linestop. Berdasarkan hasil perhitungan probabilitas kegagalan pada FTA, didapatkan komponen pit room, slide, crown dan bolster merupakan komponen yang memiliki probabilitas tinggi untuk terjadinya kegagalan. Usulan perbaikan untuk menangani permasalahan linestop berfokus pada pilar autonomous, planned maintenance, quality maintenance dan training and education pada TPM. Usulan perbaikan yang dilakukan antara lain adalah melakukan pengecekan mesin secara berkala sehingga dilakukanlah perhitungan preventive maintenance dalam menentukan jadwal perawatan yang optimal, serta pembuatan SOP dan training untuk operator. Penerapan usulan ini diharapkan dapat meminimalisir terjadinya linestop dan meningkatkan nilai OEE.
T he study was conducted on Stamping Production Division (SPD) at Sunter II Plan PT. Toyota Motor Manufacturing Indonesia (PT TMMIN). SPD is a division of PT. TMMINs operating in converting steel plate sheets into components or parts of the framework on motor vehicles. The main problem in the maintenance is the occurrence of linestop because of damage to the engine or engine components (breakdown) that interfere with the production process and can cause impact on targets, production schedules, and operator working hours (overtime). This research uses Total Productive Maintenance (TPM) approach as a solution in solving the problem. Calculation begins by measuring the value of overall equipment effectiveness (OEE) of the line observed as a benchmark in the TPM. It was found that some OEE values ​​in the observation month were still below the world class OEE value of 85%. Based on the results of the identification of six big losses, the biggest losses are caused by breakdown losses of 61.36% due to the magnitude of engine breakdown and reduced speed of 37.14% due to the decrease in production speed. The use of fault tree analysis (FTA) shows in detail the component parts and the reason why the breakdown engine is causing the linestop. Based on the calculation of the probability of failure on the FTA, obtained pit room components, slides, crown and bolster is a component that has a high probability for failure. The proposed improvements to address the linestop problem focus on autonomous pillar, planned maintenance, quality maintenance and training and education on TPM. Proposed improvements made include checking the machine regularly so that the preventive maintenance calculation is done in determining the optimal maintenance schedule, as well as the making of SOP and training for the operator. Implementation of this proposal is expected to minimize the occurrence of linestop and increase the value of OEE.